Back Home / Fasteners / Nuts / LOCK NUT NYLON UNF ZINC 1/4″-28 GR 8 LOCK NUT NYLON UNF ZINC 1/4″-28 GR 8 SKU: X8LN1428 Categories: Fasteners, Nuts Hex nut with a nylon-filled collar at its back end. When a screw reaches the collar, the threads and nylon engage for a tight, frictional fit. Restricts movement of the screw when it is subjected to vibration. Designed to be used in structural application with Grade 8 cap screws or bolts. Applications include engines, turbines, hydraulic cylinders, railroads and aerospace. Case Quantity: 100 Log In For Pricing